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WA man held by Saudis may return by Friday

The brother of an Australian citizen imprisoned in Saudi Arabia for terrorism-related offences is still waiting to be deported because he is blacklisted by police.

Junaid Thorne, the brother of Shayden - who was in May sentenced to four and a half years in a Saudi jail for material found on a laptop in his possession - hoped to be returned to his Perth family by Tuesday but is now expected on Friday.

Lawyer Abdal Jalil Al-Khalidy said Saudi police were working to remove Junaid from their blacklist so he could pass through the airport.

"He cannot leave the country until the police remove his name from the blacklist," Mr Al-Khalidy told AAP.

"But his situation is better than before now he's with immigration. Before he was at the police station and they treated him very bad."

While Junaid had been in hiding to avoid questioning by local authorities, they were now allowing him to return to Australia after he turned himself in because his residency had expired, the lawyer said.

Ideally, he would be able to clear his name so he could return to Saudi Arabia at a later date.

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"I'm trying to talk to, and my brother who is also a lawyer, to the Riyadh government, trying to explain the situation that Junaid didn't do any crime, he didn't do anything, so they can release him and in the future let him again come back to Saudi Arabia," Mr Al-Khalidy said.

"But now our priority is to send him back to Australia."

Mr Al-Khalidy said he was still working on an appeal for Shayden, which was due by Thursday, but the judge had allowed him an extension of up to a fortnight.

"In that time, we can finish it."

He repeated the mens' mother's call for high-level intervention by the Australian government.